/*
  KeePass Password Safe - The Open-Source Password Manager
  Copyright (C) 2003-2017 Dominik Reichl <dominik.reichl@t-online.de>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Text;

#if !KeePassLibSD
using System.IO.Compression;
#endif

namespace KeePassLib.Utility
{
  /// <summary>
  /// Application-wide logging services.
  /// </summary>
  public static class AppLogEx
  {
    private static StreamWriter m_swOut = null;

    public static void Open(string strPrefix)
    {
      // Logging is not enabled in normal builds of KeePass!
      /*
      AppLogEx.Close();

      Debug.Assert(strPrefix != null);
      if(strPrefix == null) strPrefix = "Log";

      try
      {
          string strDirSep = string.Empty;
          strDirSep += UrlUtil.LocalDirSepChar;

          string strTemp = UrlUtil.GetTempPath();
          if(!strTemp.EndsWith(strDirSep))
              strTemp += strDirSep;

          string strPath = strTemp + strPrefix + "-";
          Debug.Assert(strPath.IndexOf('/') < 0);

          DateTime dtNow = DateTime.UtcNow;
          string strTime = dtNow.ToString("s");
          strTime = strTime.Replace('T', '-');
          strTime = strTime.Replace(':', '-');

          strPath += strTime + "-" + Environment.TickCount.ToString(
              NumberFormatInfo.InvariantInfo) + ".log.gz";

          FileStream fsOut = new FileStream(strPath, FileMode.Create,
              FileAccess.Write, FileShare.None);
          GZipStream gz = new GZipStream(fsOut, CompressionMode.Compress);
          m_swOut = new StreamWriter(gz);

          AppLogEx.Log("Started logging on " + dtNow.ToString("s") + ".");
      }
      catch(Exception) { Debug.Assert(false); }
      */
    }

    public static void Close()
    {
      if (m_swOut == null) return;

      m_swOut.Close();
      m_swOut = null;
    }

    public static void Log(string strText)
    {
      if (m_swOut == null) return;

      if (strText == null) m_swOut.WriteLine();
      else m_swOut.WriteLine(strText);
    }

    public static void Log(Exception ex)
    {
      if (m_swOut == null) return;

      if (ex == null) m_swOut.WriteLine();
      else m_swOut.WriteLine(ex.ToString());
    }
  }
}
